# ISBLANK
The **ISBLANK** function returns TRUE if the specified cell is blank or empty. It returns FALSE if the cell contains any text, number, or expression. It is commonly used with IF and other logical functions to validate missing values before performing calculations.
{% hint style="info" %}
The **ISEMPTY** function behaves similarly to **ISBLANK** and can also be used to check for blank or empty values.
{% endhint %}
### Syntax
```javascript
ISBLANK(value)
```
### Arguments
value - The value to evaluate. Required.
### **Return value**
Either TRUE or FALSE.
### **Example**
IF(ISBLANK([2027 Plan]),0,[2027 Plan])
In this example, the **ISBLANK** function checks whether the *2027 Plan* is blank and returns TRUE or FALSE accordingly. If TRUE, it returns 0; otherwise, it returns the existing value of the *2027 Plan*.
Applying ISBLANK or ISEMPTY function
### **Excel equivalent**
[ISBLANK](https://support.microsoft.com/en-us/office/is-functions-0f2d7971-6019-40a0-a171-f2d869135665), [ISEMPTY](https://support.microsoft.com/en-us/office/isempty-function-a86d5871-f6bd-455c-9256-a69a42e55e50)
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